function validateAnslagstavla(theForm) {
var reason = "";

  reason += validateEmpty(theForm.noticeName, "Namn");
  reason += validateEmpty(theForm.noticeSubject,"Ämne");
  reason += validateEmpty(theForm.noticeText, "Meddelande");
  reason += validateEmpty(theForm.validationCode, "Valideringskod");
      
  if (reason != "") {
    alert("Några fält är felaktigt ifyllda:\n" + reason);
    return false;
  }

  return true;
}

function validateAnslagstavlaAnswer(theForm) {
var reason = "";

  reason += validateEmpty(theForm.noticeName, "Namn");
  reason += validateEmpty(theForm.noticeText, "Meddelande");
  reason += validateEmpty(theForm.validationCode, "Valideringskod");
      
  if (reason != "") {
    alert("Några fält är felaktigt ifyllda:\n" + reason);
    return false;
  }

  return true;
}

function validateKontakta(theForm) {
	var reason = "";

	  reason += validateEmpty(theForm.contactName, "Namn");
	  reason += validateEmpty(theForm.contactSubject,"Ämne");
	  reason += validateEmpty(theForm.contactEmail, "E-mail");
	  reason += validateEmpty(theForm.contactMessage, "Meddelande");
	      
	  if (reason != "") {
	    alert("Några fält är felaktigt ifyllda:\n" + reason);
	    return false;
	  }

	  return true;
	}

function validateFirstVisit(theForm) {
	var reason = "";

	  reason += validateEmpty(theForm.name, "Namn");
	  reason += validateEmpty(theForm.surname,"Efternamn");
	  reason += validateEmpty(theForm.email, "E-mail");
	      
	  if (reason != "") {
	    alert("Några fält är felaktigt ifyllda:\n" + reason);
	    return false;
	  }

	  return true;
	}

function validateEmpty(fld, namn) {
    var error = "";
  
    if (fld.value.length == 0) {
        fld.style.background = 'fcf8a8'; 
        error = namn+" är ett obligatoriskt fält.\n"
    } else {
        fld.style.background = 'f8eaee';
    }
    return error;   
}

function validateLangd(fld) {
    var error = "";
  
    if (fld.value.length == 0) {
        fld.style.background = 'fcf8a8'; 
        error = "Längd är ett obligatoriskt fält.\n"
    } 
	else if (isNaN(fld.value))
	{
		 fld.style.background = 'fcf8a8'; 
		 error = "Fel format på längd.\n"
	}
	else {
        fld.style.background = 'f8eaee';
    }
    return error;   
}

function validateUsername(fld) {
    var error = "";
    var illegalChars = /\W/; // allow letters, numbers, and underscores
 
    if (fld.value == "") {
        fld.style.background = 'Yellow'; 
        error = "You didn't enter a username.\n";
    } else if ((fld.value.length < 5) || (fld.value.length > 15)) {
        fld.style.background = 'Yellow'; 
        error = "The username is the wrong length.\n";
    } else if (illegalChars.test(fld.value)) {
        fld.style.background = 'Yellow'; 
        error = "The username contains illegal characters.\n";
    } else {
        fld.style.background = 'White';
    } 
    return error;
}

function validatePassword(fld) {
    var error = "";
    var illegalChars = /[\W_]/; // allow only letters and numbers 
 
    if (fld.value == "") {
        fld.style.background = 'Yellow';
        error = "You didn't enter a password.\n";
    } else if ((fld.value.length < 7) || (fld.value.length > 15)) {
        error = "The password is the wrong length. \n";
        fld.style.background = 'Yellow';
    } else if (illegalChars.test(fld.value)) {
        error = "The password contains illegal characters.\n";
        fld.style.background = 'Yellow';
    } else if (!((fld.value.search(/(a-z)+/)) && (fld.value.search(/(0-9)+/)))) {
        error = "The password must contain at least one numeral.\n";
        fld.style.background = 'Yellow';
    } else {
        fld.style.background = 'White';
    }
   return error;
} 

function trim(s)
{
  return s.replace(/^\s+|\s+$/, '');
} 

function validateEmail(fld) {
    var error="";
    var tfld = trim(fld.value);                        // value of field with whitespace trimmed off
    var emailFilter = /^[^@]+@[^@.]+\.[^@]*\w\w$/ ;
    var illegalChars= /[\(\)\<\>\,\;\:\\\"\[\]]/ ;
    
    if (fld.value == "") {
        fld.style.background = 'fcf8a8';
        error = "E-mail är ett obligatoriskt fält.\n";
    } else if (!emailFilter.test(tfld)) {              //test email for illegal characters
        fld.style.background = 'fcf8a8';
        error = "Felaktig e-postadress.\n";
    } else if (fld.value.match(illegalChars)) {
        fld.style.background = 'fcf8a8';
        error = "Epostadressen innehåller felaktiga tecken.\n";
    } else {
        fld.style.background = 'f8eaee';
    }
    return error;
}

function validatePhone(fld) {
    var error = "";
    var stripped = fld.value.replace(/[\(\)\.\-\ ]/g, '');     

   if (fld.value == "") {
        error = "You didn't enter a phone number.\n";
        fld.style.background = 'Yellow';
    } else if (isNaN(parseInt(stripped))) {
        error = "The phone number contains illegal characters.\n";
        fld.style.background = 'Yellow';
    } else if (!(stripped.length == 10)) {
        error = "The phone number is the wrong length. Make sure you included an area code.\n";
        fld.style.background = 'Yellow';
    } 
    return error;
}